High-voltage direct-current power supply

Abstract

The invention discloses a high-voltage direct-current power supply. The high-voltage direct-current power supply comprises a low-voltage direct-current input end, an isolation transformation module, an isolation driving module, a power supply management module, a switch module and a high-voltage direct-current output end, the power input end of the switch module is electrically connected with the low-voltage DC input end, and the power output end of the switch module is electrically connected with the input end of the isolation transformation module; the output end of the isolation transformation module is electrically connected with the high-voltage direct-current output end; the output end of the power management module is electrically connected with the driving control end of the isolation driving module; the power management module is used for providing a digital driving signal for the isolation driving module; the isolation driving module is electrically connected with the switch control end of the switch module; the isolation driving module is used for outputting a digital control signal according to the digital driving signal so as to control the on-off state of the switch module. According to the scheme, the low-voltage power supply and the high-voltage power supply can be isolated from each other, and the output stability and accuracy of the high-voltage direct-current power supply are improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a high-voltage DC power supply. Background Art

[0002] Medical electrical equipment increasingly uses high-voltage energy, including high-voltage DC or high-voltage pulse energy. Therefore, as a power supply unit for high-voltage energy, the high-voltage DC power supply is an important part of many medical electrical equipment. For the electrical safety of medical electrical equipment and the relevant medical device regulations, it is often necessary to isolate the part applied to the human body from the mains power. In particular, as a new tissue ablation method, the pulsed electric field ablation technology has received high recognition from experts in the clinical field and is unanimously regarded as a revolutionary technology in the field of tissue ablation.

[0003] The pulsed electric field ablation technology utilizes the principle of irreversible electroporation. By applying a high-voltage pulsed electric field between the tissues to be ablated, irreversible electroporation is generated on the cell membrane, causing the cells to gradually apoptose and ultimately achieving the purpose of tissue ablation. However, the voltage thresholds for causing irreversible electroporation in cells are very high. According to the available literature data, the voltage needs to reach above 1500 V / cm to cause effective damage to cardiomyocytes, and for other cell tissues, it is even higher; moreover, the safety risk of directly applying high-voltage current to the human body is also very high. If not handled properly, it may cause permanent damage to the patient or directly lead to the death of the patient.

[0004] As an essential component of the pulsed electric field ablation device, the safety of the high-voltage DC power supply must be effectively guaranteed. Among them, functions and performances such as electrical isolation between input and output, abnormal detection, and rapid power-off are particularly important. In the design of many medical devices in related technologies, designers use analog signals for signal transmission to achieve the output control of the high-voltage DC power supply. However, due to the low isolation withstand voltage strength and insufficient withstand voltage level of high-linearity analog signals, and electromagnetic interference problems will occur during the transmission process, which is not conducive to the output stability and accuracy of the high-voltage DC power supply. Summary of the Invention

[0005] This application provides a high-voltage DC power supply to solve the problems of low isolation withstand voltage strength, different withstand voltage levels, and electromagnetic interference during the transmission process of high-linearity analog signals.

[0006] In some embodiments, this application provides a high-voltage DC power supply, which includes: a low-voltage DC input terminal, an isolation transformer module, an isolation drive module, a power management module, a switching module, and a high-voltage DC output terminal;

[0007] The power input terminal of the switch module is electrically connected to the low-voltage DC input terminal, and the power output terminal of the switch module is electrically connected to the input terminal of the isolation transformer module; the output terminal of the isolation transformer module is electrically connected to the high-voltage DC output terminal;

[0008] The output terminal of the power management module is electrically connected to the drive control terminal of the isolation drive module; the power management module is used to provide a digital drive signal to the isolation drive module;

[0009] The isolation drive module is electrically connected to the switch control terminal of the switch module; the isolation drive module is used to output a digital control signal according to the digital drive signal to control the on / off state of the switch module.

[0010] The technical solution of the embodiment of the present application, by setting the isolation transformer module, enables the low-voltage DC power supply input from the low-voltage DC input terminal to be converted into a high-voltage DC power supply through the isolation transformer module and then output through the high-voltage DC output terminal, so that the low-voltage DC power supply can be converted into a high-voltage DC power supply and the mutual isolation between the low-voltage DC power supply and the high-voltage DC power supply can be realized. In addition, in this solution, the power management module provides a digital drive signal to the isolation drive module, so that the isolation drive module can output a digital control signal according to the digital drive signal to control the on / off state of the switch module and control the signal transmission path between the low-voltage DC input terminal and the isolation transformer module; at the same time, since the digital drive signal provided by the power management module to the isolation drive module and the digital control signal provided by the isolation drive module to the switch module are both digital signals, the real-time transmission of high-linearity analog quantities is avoided, the problem of the limitation of existing isolation devices in the market is overcome, the isolation withstand voltage strength and withstand voltage level of the high-voltage DC power supply are improved, and the electromagnetic interference problem generated during the transmission process is improved, thus being beneficial to improving the output stability and accuracy of the high-voltage DC power supply.

[0011] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become easily understood through the following description. Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 is a circuit block diagram of a high-voltage DC power supply provided according to an embodiment of the present application;

[0014] Figure 2 is a circuit block diagram of another high - voltage DC power supply provided according to an embodiment of the present application;

[0015] Figure 3 is Figure 2 a schematic structural diagram of the isolation transformer in

[0016] Figure 4 is a circuit block diagram of another high - voltage DC power supply provided according to an embodiment of the present application;

[0017] Figure 5 is Figure 4 a circuit block diagram in for highlighting the structure of the arc - striking detection module;

[0018] Figure 6 is Figure 5 a circuit schematic diagram of the arc - striking detection module in

[0019] Figure 7 is Figure 4 a circuit schematic diagram of the auxiliary isolation module in

[0020] Figure 8 is Figure 4 a circuit schematic diagram of the connection of the isolation drive circuit, the switch module and the isolation transformer in

[0021] Figure 9 is Figure 4 a circuit schematic diagram of the connection of the isolation transformer and the rectifier - filter circuit in

[0022] Figure 10 is Figure 4 a circuit schematic diagram of the connection of the opto - isolation circuit and the primary - side detection circuit in

[0023] Figure 11 is Figure 4 a circuit schematic diagram of the connection of the double - loop given - feedback control circuit and the power management circuit in

[0024] Figure 12 is Figure 4 a circuit schematic diagram of the input signal detection module in Specific embodiments

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description, claims and the above drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0027] The embodiment of this application provides a high-voltage DC power supply. In this embodiment, the high-voltage DC power supply is applied to the medical field. In some specific embodiments, the high-voltage DC power supply is applied to the pulsed electric field ablation device for tumor treatment. In some specific embodiments, the high-voltage DC power supply is also applied to pulsed electroporation and cell fusion for tumor treatment. In other embodiments, the high-voltage DC power supply can also be applied to one or more of the industrial field and the scientific research field. For example, it can be applied to industrial fields such as plasma generation, sewage treatment, and air purification, and can also be applied to scientific research fields such as electromagnetic pulse generation, high-power laser drive, and insulation material testing. The application field of this high-voltage DC power supply is not specifically limited here, but only for illustration.

[0028] As Figure 1 shown, the high-voltage DC power supply includes: a low-voltage DC input terminal 1, an isolation transformer module 2, an isolation drive module 3, a power management module 5, a switch module 4, and a high-voltage DC output terminal 6. Among them, the power input terminal of the switch module 4 is electrically connected to the low-voltage DC input terminal 1, and the power output terminal of the switch module 4 is electrically connected to the input terminal of the isolation transformer module 2. The output terminal of the isolation transformer module 2 is electrically connected to the high-voltage DC output terminal 6.

[0029] The isolation transformer module 2 can set the transformation ratio according to actual needs, so as to be able to convert the low-voltage DC power supply connected to the low-voltage DC input terminal 1 into a high-voltage DC power supply, and output it through the high-voltage DC output terminal 6 for use in high-voltage DC equipment. At the same time, the isolation transformer module 2 can achieve electrical isolation between the low-voltage DC input terminal 1 and the high-voltage DC output terminal 6, so as to ensure the safety and stability of the low-voltage DC power supply connected to the low-voltage DC input terminal 1, and ensure the stability and accuracy of the high-voltage DC power supply output by the high-voltage DC output terminal 6.

[0030] In an optional embodiment, as Figure 2As shown, the isolation transformer module 2 may include an isolation transformer 210 and a rectifying and filtering circuit 220. The primary side of the isolation transformer 210 is electrically connected to the power output terminal of the switching module 4, and the secondary side of the isolation transformer 210 is electrically connected to the input terminal of the rectifying and filtering circuit 220. The output terminal of the rectifying and filtering circuit 220 is electrically connected to the high-voltage DC output terminal 6.

[0031] Among them, electrical isolation can be achieved between the primary side and the secondary side of the isolation transformer 210, so that the isolation transformer has the characteristics of safety, protection, or reduction of harmonics and transient voltage surges. At the same time, by setting the voltage ratio of the primary side to the secondary side of the isolation transformer 210, the voltage on the primary side can be changed by this voltage ratio and then output from the secondary side.

[0032] Continue to refer to Figure 2 , since the low-voltage signal received by the primary side of the isolation transformer 210 can be converted into a high-voltage alternating current suitable for the high-voltage side after being transmitted to its secondary side. Therefore, a corresponding rectifying and filtering circuit 220 needs to be provided at the output terminal of the isolation transformer 210, so that the rectifying and filtering circuit 220 can convert the high-voltage alternating current output from the secondary side 22 into a high-voltage DC signal, and this high-voltage DC signal can be output via the high-voltage DC output terminal 6 and provided to an external device.

[0033] As Figure 1 and Figure 2 shown, the power input terminal of the switching module 4 is electrically connected to the low-voltage DC input terminal 1, and the power output terminal of the switching module 4 is electrically connected to the input terminal of the isolation transformer module 2; among them, the low-voltage DC input terminal 1 is the starting input part of the high-voltage DC power supply and usually receives a low-voltage DC power supply from the outside. The switching module 4 can control the on and off of the switching device to realize the on and off of the power transmission from the low-voltage DC input terminal 1 to the primary winding 21. When the switching module 4 is turned on, the switching module 4 is responsible for converting the electrical energy of the low-voltage DC input terminal 1 and transmitting it to the input terminal of the isolation transformer module 2 through its power output terminal. When the switching module 4 is turned off, the electrical energy of the low-voltage DC input terminal 1 cannot be transmitted to the input terminal of the isolation transformer module 2.

[0034] The output terminal of the power management module 5 is electrically connected to the control terminal of the isolation drive module 3. The power management module 5 is used to provide a digital drive signal to the isolation drive module 3. The isolation drive module 3 is electrically connected to the switch control terminal of the switch module 4; the isolation drive module 3 is used to output a digital control signal according to the digital drive signal to control the on / off state of the switch module 4. Among them, the power management module 5 can overall manage the entire circuit of the high-voltage DC power supply. By providing the corresponding digital drive signal to the isolation drive module 3, the isolation drive module 3 can control the on / off state of the switch module 4 according to the digital drive signal. The digital drive signal and the digital control signal are a type of signal that uses digital signals for control, that is, the digital drive signal and the digital control signal can be pulse square wave signals including high level and low level, so that the digital drive signal provided by the power management module 5 and the digital control signal provided by the isolation drive module 3 are non-linear discrete signals.

[0035] It can be understood that one of the high level and the low level of the digital drive signal can be the effective level of the digital drive signal, and the other can be the invalid level of the digital drive signal. Similarly, one of the high level and the low level of the digital control signal can be the effective level of the digital control signal, and the other can be the invalid level of the digital control signal. Exemplarily, when the power management module 5 provides the effective level of the digital drive signal to the isolation drive module 3, it can control the isolation drive module 3 to output the effective level of the digital control signal to control the switch module 4 to conduct. When the power management module 5 provides the invalid level of the digital drive signal to the isolation drive module 3, it can control the isolation drive module 3 to output the invalid level of the digital control signal to control the switch module 4 to disconnect. Among them, the corresponding relationship between the digital drive signal and the digital control signal can be designed according to actual needs, and the present application does not make specific limitations on this.

[0036] In this solution, by setting up an isolation transformer module, the low-voltage DC power supply input from the low-voltage DC input terminal can be converted into a high-voltage DC power supply through the isolation transformer module and then output through the high-voltage DC output terminal. Thus, the low-voltage DC power supply can be converted into a high-voltage DC power supply, and mutual isolation between the low-voltage DC power supply and the high-voltage DC power supply can be achieved. In addition, in this solution, the power management module provides a digital drive signal to the isolation drive module, enabling the isolation drive module to output a digital control signal according to the digital drive signal to control the on-off state of the switch module and control the signal transmission path between the low-voltage DC input terminal and the isolation transformer module. At the same time, since both the digital drive signal provided by the power management module to the isolation drive module and the digital control signal provided by the isolation drive module to the switch module are digital signals, real-time transmission of high-linearity analog quantities is avoided, overcoming the limitations of existing isolation devices in the market, improving the insufficient isolation withstand voltage strength and withstand voltage level of the high-voltage DC power supply, and improving the electromagnetic interference problem generated during the transmission process. Therefore, it is beneficial to improve the output stability and accuracy of the high-voltage DC power supply.

[0037] As a feasible embodiment, as Figure 3 shown, the isolation transformer 210 includes a primary winding 21, a secondary winding 22, a compensation winding 23, a first core column 24, and a second core column 25. The first core column 24 and the second core column 25 are opposite to each other, and the two end portions of the first core column 24 are respectively connected to the two end portions of the second core column 25 to form a quadrilateral structure. The primary winding 21 is wound around the first core column 24, and the secondary winding 22 is wound around the second core column 25. The primary winding 21 can serve as the primary side of the isolation transformer 210, and the secondary winding 22 can serve as the secondary side of the isolation transformer 210. In this way, since there is no electrical connection between the primary winding 21 and the secondary winding 22, effective isolation between the primary side and the secondary side can be achieved, preventing current leakage and electric shock hazards. Since the primary winding 21 and the secondary winding 22 are respectively wound around the first core column 24 and the second core column 25, the leakage inductance of the isolation transformer 210 will increase significantly, hindering energy transmission. The compensation winding 23 refers to a winding that can compensate for the leakage magnetic flux of the primary winding 21 and / or the secondary winding 22.

[0038] In some embodiments, the compensation winding 23 is wound around one side or opposite sides of the primary winding 21 on the first core column 24, and the compensation winding 23 is connected to the primary winding 21, so that the compensation winding 23 can compensate for the leakage flux on one side or opposite sides of the primary winding 21. In some embodiments, the compensation winding 23 is wound around one side or opposite sides of the secondary winding 22 on the second core column 25, and the compensation winding 23 is connected to the secondary winding 22, so that the compensation winding 23 can compensate for the leakage flux on one side or opposite sides of the secondary winding 22. In some embodiments, the compensation winding 23 includes a first compensation winding and a second compensation winding. The first compensation winding is wound around one side or opposite sides of the primary winding 21 on the first core column 24, and the second compensation winding is wound around one side or opposite sides of the secondary winding 22 on the second core column 25. In some embodiments, the first compensation winding can compensate for the leakage flux of the primary winding 21, and the second compensation winding can compensate for the leakage flux of the secondary winding 22, realizing the compensation of the leakage fluxes of both the primary winding 21 and the secondary winding 22 simultaneously.

[0039] In the above solution, the isolation transformer 210 is provided to include a primary winding 21, a secondary winding 22, a compensation winding 23, a first core column 24, and a second core column 25. The first core column 24 and the second core column 25 are opposite to each other. The primary winding 21 is wound around the first core column 24, and the secondary winding 22 is wound around the second core column 25, realizing high-voltage isolation. However, this winding method increases the leakage inductance of the isolation transformer 210 and hinders energy transmission. In at least one embodiment of the present application, by winding the compensation winding 23 around one side or opposite sides of the primary winding 21 on the first core column 24, and the compensation winding 23 is connected to the primary winding 21; and / or, winding the compensation winding 23 around one side or opposite sides of the secondary winding 22 on the second core column 25, and the compensation winding 23 is connected to the secondary winding 22, thereby reducing the leakage inductance of the isolation transformer 210 through the compensation winding 23, and realizing that the isolation transformer 210 can also achieve high-voltage isolation under a reasonable volume.

[0040] In an alternative embodiment of the present application, as Figure 2 and Figure 3 shown, the compensation winding 23 includes a first compensation winding. The first compensation winding includes a first leakage flux compensation winding 231 and a second leakage flux compensation winding 232. The first leakage flux compensation winding 231 is wound around the first core column 24 on one side of the primary winding 21, and the second leakage flux compensation winding 232 is wound around the first core column 24 on the other side of the primary winding 21. In this way, the first leakage flux compensation winding 231 and the second leakage flux compensation winding 232 can respectively compensate for the leakage fluxes at both ends of the primary winding 21.

[0041] In an alternative embodiment of the present application, the compensation winding 23 includes a second compensation winding, and the second compensation winding includes a third leakage flux compensation winding 233 and a fourth leakage flux compensation winding 234. The third leakage flux compensation winding 233 is wound around the second core column 25 on one side of the secondary winding 22, and the fourth leakage flux compensation winding 234 is wound around the second core column 25 on the other side of the secondary winding 22. In this way, the third leakage flux compensation winding 233 and the fourth leakage flux compensation winding 234 can respectively compensate for the leakage flux at both ends of the secondary winding 22.

[0042] In an alternative embodiment of the present application, the first core column 24 includes a first main body, a first auxiliary core column, and a second auxiliary core column; the first auxiliary core column is connected to one side of the first main body, the second auxiliary core column is connected to the other side of the first main body, and the first auxiliary core column and the second auxiliary core column are opposite to each other, so that the first core column 24 as a whole has a U-shaped structure. The U-shaped structure makes the coupling between the primary winding 21 and the first leakage flux compensation winding 231 and the second leakage flux compensation winding 232 on the first auxiliary core column and the second auxiliary core column closer, which is beneficial to the efficient transmission of energy. The first leakage flux compensation winding 231 is wound around the first auxiliary core column, the second leakage flux compensation winding 232 is wound around the second auxiliary core column, and the primary winding 21 is wound around the first main body. The presence of the first leakage flux compensation winding 231 and the second leakage flux compensation winding 232 can compensate for the leakage flux generated by the primary winding 21, thereby reducing the leakage magnetic loss and improving the efficiency of the isolation transformer 210. By reasonably designing the number of turns and the current direction of the compensation winding 23, the magnetic field distribution can be further optimized to make the magnetic field more uniform, reduce the magnetic resistance and loss of the first core column 24, and thus improve the energy conversion efficiency of the isolation transformer 210.

[0043] In an alternative embodiment of the present application, the second core column 25 includes a second main body, a third auxiliary core column, and a fourth auxiliary core column; the third auxiliary core column is connected to one side of the second main body, the fourth auxiliary core column is connected to the other side of the second main body, and the third auxiliary core column and the fourth auxiliary core column are opposite to each other, so that the second core column 25 as a whole has a U-shaped structure. The U-shaped structure makes the coupling between the secondary winding 22 and the third leakage flux compensation windings 233 and the fourth leakage flux compensation windings 234 on the third and fourth auxiliary core columns closer, which is beneficial to the efficient transmission of energy; the third leakage flux compensation winding 233 is wound around the third auxiliary core column, the fourth leakage flux compensation winding 234 is wound around the fourth auxiliary core column, and the secondary winding 22 is wound around the second main body. The presence of the third leakage flux compensation winding 233 and the fourth leakage flux compensation winding 234 can compensate for the leakage flux generated by the secondary winding 22, thereby reducing the leakage magnetic loss and improving the efficiency of the isolation transformer 210. By reasonably designing the number of turns and the current direction of the compensation winding 23, the magnetic field distribution can be further optimized to make the magnetic field more uniform, reduce the magnetic resistance and loss of the second core column 25, and thus improve the energy conversion efficiency of the isolation transformer 210.

[0044] In an alternative embodiment of the present application, the first main body and the second main body are opposite to each other, and the coupling area between the primary winding 21 and the secondary winding 22 is larger than the coupling areas of the first leakage flux compensation winding 231, the second leakage flux compensation winding 232, the third leakage flux compensation winding 233, and the fourth leakage flux compensation winding 234. The large coupling area between the primary winding 21 and the secondary winding 22 reduces the electric field coupling by increasing the distance; the small coupling areas of the first leakage flux compensation winding 231, the second leakage flux compensation winding 232, the third leakage flux compensation winding 233, and the fourth leakage flux compensation winding 234 are used for magnetic field path constraint.

[0045] In an alternative embodiment of the present application, as Figure 2 and Figure 3 shown, the isolation transformer 210 further includes a pick-up winding 26. In some embodiments, the pick-up winding 26 is located between the compensation winding 23 and the primary winding 21, and the compensation winding 23 is connected to the primary winding 21 through the pick-up winding 26. The pick-up winding 26 can pick up the leakage flux of the primary winding 21 so that the compensation winding 23 can better compensate for the leakage flux of the primary winding 21. In some embodiments, the pick-up winding 26 is located between the compensation winding 23 and the secondary winding 22, and the compensation winding 23 is connected to the secondary winding 22 through the pick-up winding 26. Thus, the pick-up winding 26 can pick up the leakage flux of the secondary winding 22 so that the compensation winding 23 can better compensate for the leakage flux of the secondary winding 22.

[0046] In an alternative embodiment of the present application, the pickup winding 26 includes a first pickup winding, and the first pickup winding includes a first leakage flux pickup winding 261 and a second leakage flux pickup winding 262. The first leakage flux pickup winding 261 is disposed at one end of the primary winding 21, and the second leakage flux pickup winding 262 is disposed at the other end of the primary winding 21. The first leakage flux compensation winding 231, the first leakage flux pickup winding 261, the second leakage flux pickup winding 262, and the second leakage flux compensation winding 232 are connected in series in sequence. Thus, the first leakage flux pickup winding 261 and the second leakage flux pickup winding 262 respectively pick up the leakage fluxes at both ends of the primary winding 21, and then the first leakage flux compensation winding 231 and the second leakage flux compensation winding 232 compensate for the leakage fluxes at both ends of the primary winding 21.

[0047] In an alternative embodiment of the present application, the pickup winding 26 includes a second pickup winding, and the second pickup winding includes a third leakage flux pickup winding 263 and a fourth leakage flux pickup winding 264. The third leakage flux pickup winding 263 is disposed at one end of the secondary winding 22, and the fourth leakage flux pickup winding 264 is disposed at the other end of the secondary winding 22. The third leakage flux compensation winding 233, the third leakage flux pickup winding 263, the fourth leakage flux pickup winding 264, and the fourth leakage flux compensation winding 234 are connected in series in sequence. Thus, the third leakage flux pickup winding 263 and the fourth leakage flux pickup winding 264 respectively pick up the leakage fluxes at both ends of the secondary winding 22, and then the third leakage flux compensation winding 233 and the fourth leakage flux compensation winding 234 compensate for the leakage fluxes at both ends of the secondary winding 22.

[0048] In an alternative embodiment of the present application, as Figure 2 shown, the high-voltage DC power supply further includes an input signal detection module 7. The input end of the input signal detection module 7 is electrically connected to the low-voltage DC input end 1, and the first output end of the input signal detection module 7 is electrically connected to the input end of the isolation drive module 3. The input signal detection module 7 is configured to detect the low-voltage DC signal of the low-voltage DC input end 1 and output a digital detection signal to the isolation drive module 3 according to the low-voltage DC signal. The isolation drive module 3 is further configured to output a digital control signal according to the digital detection signal. Among them, the digital detection signal can also be a digital signal including a high level and a low level. The input signal detection module 7 is configured to detect the low-voltage DC signal input by the low-voltage DC input end 1, convert it into a digital detection signal and transmit it to the isolation drive module 3. The isolation drive module 3 uniformly controls the switch module 4 with a digital control signal to implement a full-level interaction mode. The circuit volume of the high-voltage DC power supply is smaller and the transmission efficiency is higher.

[0049] In an alternative embodiment of the present application, as Figure 2As shown, the second output terminal of the input signal detection module 7 is electrically connected to the first input terminal of the power management module 5. At this time, the power management module 5 is used to generate a digital drive signal provided to the isolation drive module 3 according to the digital detection signal. In this way, the power management module 5 can provide a corresponding digital drive signal according to the digital detection signal to control the working state of the isolation drive circuit 3, and on the premise of ensuring the accuracy of the digital control signal provided by the isolation drive circuit 3 to the switch module 4, realize the full-level interaction of the entire circuit.

[0050] Based on the above embodiments, as Figure 2 and Figure 4 shown, the input signal detection module 7 includes at least one of a current limiting detection circuit 71 and an over-voltage and under-voltage detection circuit 72. Among them, the current limiting detection circuit 71 is used to detect the low-voltage DC current in the low-voltage DC signal and generate a current limiting signal, and the isolation drive module 3 controls the switch module 4 to be in the off state according to the current limiting signal to achieve the current limiting effect. The over-voltage and under-voltage detection circuit 72 is used to detect the low-voltage DC voltage in the low-voltage DC signal to provide a circuit start-stop condition signal for the high-voltage side. This circuit start-stop condition signal is transmitted to the isolation drive module 3 in the form of a digital detection signal, and the isolation drive module 3 controls the on-off state of the switch module 4 accordingly, so that the low-voltage DC signal is within a predetermined safe operating range. At the same time, the current limiting detection circuit 71 and the over-voltage and under-voltage detection circuit 72 can convert the working condition information such as the low-voltage DC voltage and low-voltage DC current at the low-voltage DC input terminal 1 from analog signals into digital signals, and then transmit them to the isolation drive module 3. The isolation drive module 3 uniformly controls the switch module 4 with a digital control signal to achieve the full-level interaction mode, and the circuit volume of this high-voltage DC power supply is smaller and the transmission efficiency is higher.

[0051] In an alternative embodiment of the present application, as Figure 2 and Figure 4 shown, the high-voltage DC power supply further includes an arc detection module 8; the input terminal of the arc detection module 8 is electrically connected between the output terminal of the isolation transformer module 2 and the high-voltage DC output terminal 6. The output terminal of the arc detection module 8 is electrically connected to the second input terminal of the power management module 5. The arc detection module 8 is used to obtain the high-voltage DC signal at the high-voltage DC output terminal 6 and output an arc alarm signal based on the high-voltage DC signal and the arc trigger threshold. The power management module 5 is further used to provide a digital drive signal to the isolation drive module 3 according to the arc alarm signal.

[0052] Among them, the arcing detection module 8 is a device for detecting the air ionization phenomenon (i.e., arcing) caused by a significant voltage difference in a high-voltage DC power supply. The arcing trigger threshold is a numerical boundary for determining whether an arcing phenomenon occurs. The arcing alarm signal is an electrical signal indicating the occurrence of the arcing phenomenon. When the arcing phenomenon occurs, the high-voltage DC signal will be abnormal. Therefore, the arcing alarm signal can be output according to the high-voltage DC signal and the arcing trigger threshold. Furthermore, the power management module 5 can control the digital drive signal provided to the isolation drive module 3 according to the arcing alarm signal, so that the isolation drive module 3 can control the switch module 4 to be in the off state according to the digital drive signal, cutting off the energy supply of the high-voltage DC power supply. Therefore, the arcing detection module 8 in this solution can quickly detect the abnormal state of the high-voltage DC output terminal 6 and feedback it to the power management module 5, achieving a power-off response speed of milliseconds or even nanoseconds, and timely cutting off the energy supply of the high-voltage DC power supply. Compared with traditional power frequency transformer isolation, this application has the advantages of small volume, low cost, fast response, and higher reliability at the same time.

[0053] In an optional embodiment, when the isolation transformer module 2 includes an isolation transformer 210 and a rectifier filter circuit 220, the arcing detection module 8 is specifically electrically connected between the output terminal of the rectifier filter circuit 220 and the high-voltage DC output terminal 6, so that the arcing detection module 8 can detect the high-voltage DC signal rectified by the rectifier filter circuit 220.

[0054] In an optional embodiment of the present application, the high-voltage DC power supply further includes a double-loop given feedback control circuit 9 and a control module 10. The output terminal of the double-loop given feedback control circuit 9 is electrically connected to the first input terminal of the control module 10. The output terminal of the arcing detection module 8 is also electrically connected to the second input terminal of the control module 10. The first control terminal of the control module 10 is electrically connected to the control terminal of the arcing detection module 8. The second control terminal of the control module 10 is electrically connected to the control terminal of the double-loop given feedback control circuit 9. The input terminal of the double-loop given feedback control circuit 9 is electrically connected between the arcing detection module 8 and the high-voltage DC output terminal 6. The control module 10 is used to control the double-loop given feedback control circuit 9 to collect the high-voltage DC signal at the high-voltage DC output terminal 6. The control module 10 is also used to adjust the arcing trigger sensitivity and the arcing trigger threshold of the arcing detection module 8 according to the high-voltage DC signal and the arcing alarm signal.

[0055] Among them, the basic idea of the dual-loop given feedback control circuit 9 is to control a certain or some parameters of the circuit through two feedback loops to achieve a more accurate and stable control effect. The dual-loop given feedback control circuit 9 can include an inner loop and an outer loop. The inner loop is usually used to control rapidly changing parameters such as current, while the outer loop is used to control relatively stable parameters such as voltage. Through the coordinated operation of the inner and outer loops, precise adjustment and stable control of the circuit parameters can be achieved. The high-voltage DC signal includes high-voltage DC current and high-voltage DC voltage. The input end of the dual-loop given feedback control circuit 9 is electrically connected between the arc strike detection module 8 and the high-voltage DC output end 6, so that the high-voltage DC signal can be collected. At the same time, the dual-loop given feedback control circuit 9 is connected to the control module 10 and is controlled by the control module 10 to periodically adjust the maximum high-voltage DC current and high-voltage DC voltage. The arc strike trigger sensitivity refers to the sensitivity of the arc strike detection system to the arc strike phenomenon. The control module 10 is connected to the arc strike detection module 8 and can adjust operating parameters such as the arc strike trigger sensitivity and the arc strike trigger threshold of the arc strike detection module 8. In some embodiments, the control module 10 is also used to configure and collect the operating parameters of the dual-loop given feedback control circuit 9.

[0056] In some embodiments, the dual-loop given feedback control circuit 9 includes a voltage loop and a current loop. The first sub-control end of the control module 10 is electrically connected to the voltage loop and is used to output a voltage control signal. The second sub-control end of the control module 10 is electrically connected to the current loop and is used to output a current control signal. The control module 10 controls the high-voltage output voltage and the overload current limiting value respectively through the dual-loop given feedback control circuit 9. When the load is light, the current loop of the dual-loop given feedback control circuit 9 is saturated, and the high-voltage output voltage changes proportionally with the voltage control signal. When the load exceeds the designed load limit, the voltage loop of the dual-loop given feedback control circuit 9 is saturated, and the high-voltage output current changes proportionally with the current control signal.

[0057] In an alternative embodiment of the present application, as Figure 2 and Figure 4 shown, the high-voltage DC power supply may further include an opto-isolation circuit 13. The opto-isolation circuit 13 is electrically connected between the power management module 5 and the isolation drive module 3.

[0058] The opto-isolation circuit 13 is responsible for transmitting pulse or level signals on the high-voltage side and the low-voltage side. By connecting the isolation drive module 3 and the power management module 5, the opto-isolation circuit 13 provides a high-voltage isolation transmission channel for pulse or level signals between the isolation drive module 3 and the power management module 5, so that the digital drive signal output by the power management module 5 can be coupled to the isolation drive module 3. In some embodiments, the opto-isolation circuit 13 includes at least one of a fiber optic isolator and an opto-coupler isolator, or other devices capable of achieving signal isolation.

[0059] In some embodiments, when the high-voltage DC power supply includes the input signal detection module 7, the opto-isolation circuit 13 is also electrically connected between the input signal detection module 7 and the power management module 5, so that the opto-isolation circuit 13 can couple the digital detection signal output by the input signal detection module 7 to the power management module 5, enabling the power management module 5 to control the digital drive signal provided to the isolation drive module 3 according to the digital detection signal coupled by the opto-isolation circuit 13.

[0060] In addition, since the input end of the power management module 5 is also electrically connected to the output end of the arc detection module 8 and the output end of the double-loop given feedback control circuit 9, and at the same time, both the arc detection module 8 and the double-loop given feedback control circuit are electrically connected to the high-voltage DC output end 6. Therefore, by setting the opto-isolation circuit 13, the isolation between the high-voltage side and the low-voltage side can be achieved, preventing the high-voltage DC signal at the high-voltage DC output end 6 from being transmitted to the low-voltage side through the power management module 5 and damaging the modules on the low-voltage side, realizing ultra-high voltage isolation control.

[0061] It can be understood that since multiple signals need to be transmitted between the power management module 5 and the opto-isolation circuit 13, that is, the power management module 5 outputs a digital drive signal to the opto-isolation circuit 13, and at the same time, it also receives the digital detection signal coupled by the opto-isolation circuit 13, so multiple signal transmission channels can be set between the power management module 5 and the opto-isolation circuit 13. Figure 4 Only one signal harness is exemplified herein, which is not a limitation on the signal channel setting method in this application. The signal channel setting method between the power management module 5 and the opto-isolation circuit 13 in this application can be designed according to actual needs and is not limited herein.

[0062] In some embodiments, the switch module 4 includes a full-bridge switch circuit. The control end of the full-bridge switch circuit is electrically connected to the output end of the isolation drive module 3 for receiving a digital control signal and adjusting its own on-off state according to the digital control signal. At the same time, the power input end of the full-bridge switch circuit is electrically connected to the low-voltage DC input end 1, and the power output end of the full-bridge switch circuit is electrically connected to the isolation transformer 210 (such as the primary winding 21). The switch module 4 (such as the full-bridge switch circuit) is used to convert the low-voltage direct current input from the low-voltage DC input end 1 into high-frequency alternating current energy and transmit it to the isolation transformer 210 (such as the primary winding 21) when conducting.

[0063] In an alternative embodiment of the present application, such as Figure 2 and Figure 4As shown, the high-voltage DC power supply further includes an optical fiber isolation communication module 11. The communication terminal of the control module 10 is electrically connected to the optical fiber isolation communication module 11, and the control module 10 is used to perform optical fiber isolation communication with external devices through the optical fiber isolation communication module 11. Among them, the optical fiber isolation communication module 11 uses optical fiber as the transmission medium. Since the optical fiber itself is not affected by electromagnetic fields, the anti-interference ability of the communication system can be significantly improved. In the high-voltage DC power supply, due to the existence of strong electric fields and strong magnetic fields, the traditional electrical signal transmission method is easily interfered, resulting in signal distortion or transmission errors. The optical fiber isolation communication module 11 can effectively isolate these interferences and ensure the stable transmission of signals. Therefore, the control module 10 performs optical fiber isolation communication with external devices through the optical fiber isolation communication module 11, enabling the high-voltage DC power supply and external devices to perform signal transmission more stably.

[0064] In an alternative embodiment of the present application, as Figure 2 and Figure 4 shown, the high-voltage DC power supply further includes an isolated auxiliary power supply 12. The input terminal of the isolated auxiliary power supply 12 is electrically connected to the low-voltage DC input terminal 1, and the output terminal of the isolated auxiliary power supply 12 is electrically connected to the power management module 5 to supply power to the power management module 5, while isolating the low-voltage DC input terminal 1 and the power management module 5 from each other to achieve isolation between the primary side and the secondary side of the isolation transformer 210.

[0065] In an alternative embodiment of the present application, as Figure 4 and Figure 5 shown, the arc detection module 8 includes a pulse current detection circuit 81, a limiting sampling circuit 82, a peak detection circuit 83, and an integration trigger circuit 84. The pulse current detection circuit 81 is used to obtain the current signal output from the output terminal of the isolation transformer module (rectifier filter circuit 220). The input terminal of the limiting sampling circuit 82 is electrically connected to the output terminal of the pulse current detection circuit 81, and the limiting sampling circuit 82 is used to convert the current signal into a voltage signal. The input terminal of the peak detection circuit 83 is electrically connected to the output terminal of the limiting sampling circuit 82, and the peak detection circuit 83 is used to detect the voltage signal with an amplitude greater than a preset amplitude to obtain a detection signal. The input terminal of the integration trigger circuit 84 is electrically connected to the output terminal of the peak detection circuit 83. The output terminal of the integration trigger circuit 84 is electrically connected to the input terminal of the power management module 5, and the integration trigger circuit 84 is used to integrate the detection signal and output an arc alarm signal to the control module 10 when the integration result is greater than a preset integration threshold. Thus, it can accurately achieve high-voltage abnormal discharge detection, that is, the detection of the arc generated by the circuit, providing flexible safety protection for the insulation, reliable connection of the high-voltage DC output terminal 6, and the safety of the load.

[0066] In an alternative embodiment of the present application, as Figure 5 and Figure 6As shown, the pulsed current detection circuit 81 includes a pulsed current sensor CT1. The first detection end of the pulsed current sensor CT1 is electrically connected to the output end of the rectifying and filtering circuit 220. The second detection end of the pulsed current sensor CT1 is electrically connected to the high-voltage DC output end 6. The output end of the pulsed current sensor CT1 is electrically connected to the input end of the amplitude-limiting and sampling circuit 82. Among them, the pulsed current sensor CT1 operates based on the principle of electromagnetic induction, and senses the current change passing through its magnetic core through one or more coils (usually iron-core coils). When a high-frequency pulsed current passes through the primary coil, a corresponding voltage signal will be generated in the secondary coil. This voltage signal is proportional to the primary current, so the primary current can be indirectly measured by measuring the secondary voltage. Therefore, by electrically connecting the pulsed current sensor CT1 between the output end of the rectifying and filtering circuit 210 and the high-voltage DC output end 6, the current signal output from the output end of the rectifying and filtering circuit 210 can be detected.

[0067] In an alternative embodiment of the present application, as Figure 5 and Figure 6 shown, the amplitude-limiting and sampling circuit 82 includes a first resistor R1, a second resistor R2, a third resistor R3, and a first capacitor C1. One end of the first resistor R1 is electrically connected to the first output end of the pulsed current detection circuit 81 and is grounded, and the other end of the first resistor R1 is electrically connected to the second output end of the pulsed current detection circuit 81. The first end of the second resistor R2 is grounded, the other end of the second resistor R2 is electrically connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is electrically connected to the second output end of the pulsed current detection circuit 81. One end of the third resistor R3 is electrically connected to one end of the first capacitor C1, and the other end of the third resistor R3 is electrically connected to the input end of the peak detection circuit 83. The amplitude-limiting and sampling circuit 82 composed of the first resistor R1, the second resistor R2, the third resistor R3, and the first capacitor C1 converts the current signal into a voltage signal for processing.

[0068] In an alternative embodiment of the present application, as Figure 5 and Figure 6 shown, the peak detection circuit 83 includes a peak detection chip U1. The input end of the peak detection chip U1 is electrically connected to the output end of the amplitude-limiting and sampling circuit 82, and the output end of the peak detection chip U1 is electrically connected to the input end of the integration trigger circuit 84. Among them, the main function of the peak detection chip U1 (Peak Detector Chip) is to extract the peak value of the input signal and generate a corresponding output signal. Therefore, the peak detection chip U1 can detect a voltage signal with an amplitude greater than a preset amplitude to obtain a detection signal.

[0069] In some embodiments, the peak detection circuit 83 further includes a first diode D1, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6. The first terminal of the peak detection chip U1 is electrically connected to the output terminal of the amplitude limiting and sampling circuit 82. The second terminal of the peak detection chip U1 is electrically connected to the ground. The third terminal of the peak detection chip U1 is electrically connected to the positive electrode of the first diode D1. The negative electrode of the first diode D1 is electrically connected to one end of the fourth resistor R4. The other end of the fourth resistor R4 is electrically connected to the fourth terminal of the peak detection chip U1. The fifth resistor R5 is connected in series between the fourth terminal of the peak detection chip U1 and the ground. The sixth resistor R6 is connected in series between the fourth terminal of the peak detection chip U1 and the third sub-control terminal DA3 of the control module 10. Among them, the peak detection circuit 83 filters and performs controllable gain detection on the voltage signal representing the amplitude and spectrum of the high-frequency alternating current component through the above circuit structure, so as to adjust the sensitivity of the circuit, so that the control module 10 can output a control signal through the third sub-control terminal DA3 to adjust the arc strike detection sensitivity of the arc strike detection module 8.

[0070] In an alternative embodiment of the present application, as Figure 5 and Figure 6 shown, the integration trigger circuit 84 includes an integrator circuit and a trigger chip U3. The input terminal of the integrator circuit is electrically connected to the output terminal of the peak detection circuit 83. The output terminal of the integrator circuit is electrically connected to the input terminal of the trigger chip U3. The output terminal of the trigger chip U3 is electrically connected to the input terminal of the power management module 5.

[0071] Among them, the integrator circuit is a circuit that converts the instantaneous value of the input signal into the integral value of the output signal. The trigger chip U3 usually has a threshold comparison function, that is, it can compare the input signal with a set threshold and output a comparison result. In the integration trigger circuit 84, the trigger chip U3 is used to detect whether the output signal of the integrator circuit reaches or exceeds the set threshold. Therefore, through the cooperation of the integrator circuit and the trigger chip U3, it is possible to perform integral timing on the detected signal and output an arc strike alarm signal when the integral result is greater than the preset integral threshold, so that the power management module 5 controls the supply of a common digital drive signal to the isolation drive module 3 based on the arc strike alarm signal, so that the isolation drive module 3 can control the switch module 4 to disconnect according to the digital drive signal, realizing a controlled adjustment of the protection action time.

[0072] In some embodiments, the integrator circuit includes an operational amplifier U2, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, and a second capacitor C2. The seventh resistor R7 is connected in series between the positive input terminal of the operational amplifier U2 and the output terminal of the peak detector circuit 83. One end of the second capacitor C2 is electrically connected to the positive input terminal of the operational amplifier U2, and the other end of the second capacitor C2 is electrically connected to ground. The eighth resistor R8 is connected in series between the negative input terminal of the operational amplifier U2 and the fourth sub-control terminal of the control module 10. The ninth resistor R9 is connected in series between the negative input terminal of the operational amplifier U2 and ground. The tenth resistor R10 is electrically connected between the negative input terminal of the operational amplifier U2 and the reference voltage. The output terminal of the operational amplifier U2 serves as the output terminal of the integrator circuit and is electrically connected to the input terminal of the trigger chip U3.

[0073] In some embodiments, the integration trigger circuit 84 further includes an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a first MOS transistor Q1, a second MOS transistor Q2, a second diode D2, a first light-emitting diode LED1, and a second light-emitting diode LED2. One end of the eleventh resistor R11 is electrically connected to the output terminal of the integrator circuit, and the other end of the eleventh resistor R11 is electrically connected to ground. The twelfth resistor R12 is electrically connected between the first terminal and the second terminal of the trigger chip U3. The thirteenth resistor R13 is electrically connected between the second terminal and the third terminal of the trigger chip U3. The gate of the first MOS transistor Q1 is electrically connected to the output terminal of the integrator circuit, the source of the first MOS transistor Q1 is electrically connected to ground, and the drain of the first MOS transistor Q1 is electrically connected to the second terminal of the trigger chip U3. A third capacitor C3 is connected in series between the second terminal of the trigger chip U3 and ground. A fourth capacitor C4 is connected in series between the third terminal of the trigger chip U3 and ground. The drain of the second MOS transistor Q2 is electrically connected to the third terminal of the trigger chip U3, the source of the second MOS transistor Q2 is electrically connected to ground, and the fourteenth resistor R14 is electrically connected between the gate of the second MOS transistor Q2 and ground. The fifteenth resistor R15 and the sixteenth resistor R16 are connected in series between the gate of the second MOS transistor Q2 and the positive electrode of the first light-emitting diode LED1, and the negative electrode of the first light-emitting diode LED1 is electrically connected to ground. A seventeenth resistor is electrically connected between the fourth terminal of the trigger chip U3 and the positive electrode of the second light-emitting diode LED2, and the negative electrode of the second light-emitting diode LED2 is electrically connected to the fifth terminal of the trigger chip U3. The sixth terminal of the trigger chip U3 is electrically connected to ground. The seventh terminal of the trigger chip U3 serves as a power supply terminal and is electrically connected to the isolated auxiliary power supply 12. The eighth terminal of the trigger chip U3 is electrically connected to the positive electrode of the second diode D2, and the negative electrode of the second diode D2 is electrically connected to the power management circuit 31 and the control module 10.

[0074] Exemplarily, such as Figure 5 and Figure 6As shown, the arc striking detection module 8 further includes a first filter capacitor, which is connected in series between the power supply terminal and the ground of the arc striking detection module 8. In some embodiments, the number of the first filter capacitors is multiple. In this embodiment, the first filter capacitor at least includes a fifth capacitor C5 and a sixth capacitor C6. The first electrode plate of the fifth capacitor C5 and the second electrode plate of the sixth capacitor C6 both receive a 5V power supply signal. The second electrode plate of the fifth capacitor C5 and the second electrode plate of the sixth capacitor C6 are both electrically connected to the ground terminal.

[0075] In an alternative embodiment of the present application, as Figure 4 and Figure 7 shown, the isolated auxiliary power supply 12 includes a first power supply chip U4, an eighteenth resistor R18, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, an auxiliary transformer VT2, a third zener diode D3, a fourth zener diode D4, a fifth zener diode D5, and a sixth zener diode D6. The power input terminal of the first power supply chip U4 is electrically connected to the low-voltage DC input terminal 1. The seventh capacitor C7 and the eighth capacitor C8 are both electrically connected between the power input terminal of the first power supply chip U4 and the ground. The eighteenth resistor R18 is connected in series between the second input terminal of the first power supply chip U4 and the ground. The power output terminal of the first power supply chip U4 is electrically connected to the primary side of the auxiliary transformer VT2. One end of the secondary side of the auxiliary transformer VT2 is electrically connected to the positive electrode of the third zener diode D3, and the other end of the secondary side of the auxiliary transformer VT2 is electrically connected to the positive electrode of the fourth zener diode D4. The negative electrode of the fifth zener diode D5 is electrically connected to the positive electrode of the third zener diode D3, and the positive electrode of the fifth zener diode D5 is electrically connected to the ground. The positive electrode of the sixth zener diode D6 is electrically connected to the ground, and the negative electrode of the sixth zener diode D6 is electrically connected to the positive electrode of the fourth zener diode D4. The ninth capacitor C9 is electrically connected between the negative electrodes of the third zener diode D3 and the fourth zener diode D4 and the ground. The negative electrodes of the third zener diode D3 and the fourth zener diode D4 both serve as the first power output terminal of the isolated auxiliary power supply 12, and are at least used to supply electrical energy to the power management module 5.

[0076] Based on the above embodiments, the isolated auxiliary power supply 12 further includes a second power chip U5, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a first inductor L1, and a third light-emitting diode LED3. The first terminal of the second power chip U5 is electrically connected to the negative electrodes of the third voltage-regulating diode D3 and the fourth voltage-regulating diode D4. One end of the tenth capacitor C10 and one end of the eleventh capacitor C11 are electrically connected to the first terminal of the second power chip U5. The other ends of the tenth capacitor C10 and the eleventh capacitor C11 are electrically connected to one end of the twelfth capacitor C12. The other end of the twelfth capacitor C12 is electrically connected to the second terminal of the second power chip U5. The nineteenth resistor R19 is connected in series between the negative electrodes of the third voltage-regulating diode D3 and the fourth voltage-regulating diode D4 and the third terminal of the second power chip U5. The twentieth resistor R20 is connected in series between the third terminal of the second power chip U5 and the ground.

[0077] The twenty-first resistor R21 is connected in series between the fourth terminal of the second power chip U5 and the ground. One end of the twenty-second resistor R22 is electrically connected to the fourth terminal of the second power chip U5. The other end of the twenty-second resistor R22 serves as the second power output terminal of the isolated auxiliary power supply 12, and is at least used to supply power to one of the power management circuit 31, the control module 10, the arc striking detection module 8, and the double-loop given feedback control circuit 9. One end of the twenty-third resistor R23 is electrically connected to the other end of the twenty-second resistor R22 (i.e., the end where the twenty-second resistor R22 is electrically connected to the second power output terminal of the isolated auxiliary power supply 12). The other end of the twenty-third resistor R23 is electrically connected to the positive electrode of the third light-emitting diode LED3. The negative electrode of the third light-emitting diode LED3 is electrically connected to the fifth terminal of the second power chip U5. The first inductor L1 is connected in series between the other end of the twenty-second resistor R22 (i.e., the end where the twenty-second resistor R22 is electrically connected to the second power output terminal of the isolated auxiliary power supply 12) and the sixth terminal of the second power chip U5. The thirteenth capacitor C13 and the fourteenth capacitor C14 are both electrically connected between the other end of the twenty-second resistor R22 (i.e., the end where the twenty-second resistor R22 is electrically connected to the second power output terminal of the isolated auxiliary power supply 12) and the ground. Through the above structure, the magnitude of the voltage can be converted to better supply power to the secondary side. At the same time, the third light-emitting diode LED3 can be used to indicate whether the power supply is normal.

[0078] In an alternative embodiment of the present application, such as Figure 4 and Figure 8As shown in the figure, the high-voltage DC power supply further includes a fuse FUSE1, a twenty-fifth capacitor C25, and a twenty-sixth capacitor C26. The fuse FUSE1 is connected in series between the low-voltage DC input terminal 1 and the switching module 4. Both the twenty-fifth capacitor C25 and the twenty-sixth capacitor C26 are polarized capacitors. The positive electrodes of the twenty-fifth capacitor C25 and the twenty-sixth capacitor C26 are both electrically connected to the switching module 4, and the negative electrodes of the twenty-fifth capacitor C25 and the twenty-sixth capacitor C26 are both electrically connected to the ground. The fuse FUSE1 can play a protective role and disconnect when the current is too large. The twenty-fifth capacitor C25 and the twenty-sixth capacitor C26 can ensure the stability and reliability of the circuit.

[0079] In an alternative embodiment of the present application, as Figure 4 and Figure 8 shown, the full-bridge switching circuit includes a third MOS transistor Q3, a fourth MOS transistor Q4, a fifth MOS transistor Q5, a sixth MOS transistor Q6, a fortieth resistor R40, a forty-first resistor R41, a twenty-third capacitor C23, and a twenty-fourth capacitor C24. The gates of the third MOS transistor Q3, the fourth MOS transistor Q4, the fifth MOS transistor Q5, and the sixth MOS transistor Q6 are all electrically connected to the isolation drive circuit 32. The drains of the third MOS transistor Q3, the fourth MOS transistor Q4, the fifth MOS transistor Q5, and the sixth MOS transistor Q6 are all electrically connected to the low-voltage DC input terminal 1. The sources of the third MOS transistor Q3 and the fifth MOS transistor Q5 are respectively connected to both ends of the primary winding in the isolation transformer 210. The sources of the fourth MOS transistor Q4 and the sixth MOS transistor Q6 are electrically connected and are both electrically connected to one end of the fortieth resistor R40, the forty-first resistor R41, the twenty-third capacitor C23, and the twenty-fourth capacitor C24. The other ends of the fortieth resistor R40, the forty-first resistor R41, the twenty-third capacitor C23, and the twenty-fourth capacitor C24 are electrically connected to the ground. Thus, the isolation drive circuit 32 can control the on / off states of the third MOS transistor Q3, the fourth MOS transistor Q4, the fifth MOS transistor Q5, and the sixth MOS transistor Q6 by outputting digital control signals.

[0080] Based on the above embodiments, as Figure 4 and Figure 8As shown, the isolation drive module 3 includes a first isolation drive chip U6, a second isolation drive chip U8, a third isolation drive chip U10, and a fourth isolation drive chip U12. The output ends of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12 are electrically connected to the gates of the third MOS transistor Q3, the fourth MOS transistor Q4, the fifth MOS transistor Q5, and the sixth MOS transistor Q6 in one-to-one correspondence. The first input ends of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12 are electrically connected to the opto-isolation circuit 33.

[0081] Exemplarily, the isolation drive circuit 32 further includes a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, and a twenty-fourth resistor R24. The fifteenth capacitor C15, the sixteenth capacitor C16, the seventeenth capacitor C17, and the eighteenth capacitor C18 are electrically connected between the first input ends and the ground ends of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12 in one-to-one correspondence. One end of the twenty-fourth resistor R24 is electrically connected to the second ends of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12, and the other end of the twenty-fourth resistor R24 is electrically connected to the ground. The fifteenth capacitor C15, the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, and the twenty-fourth resistor R24 can reduce the influence of power supply fluctuations on the performance of the first isolation drive chip U6, the second isolation drive chip U7, the third isolation drive chip U8, and the fourth isolation drive chip U9, and improve the stability and reliability of the circuit.

[0082] Exemplarily, the isolation drive circuit 32 further includes a twenty-seventh resistor R27, a twenty-eighth resistor R28, a thirtieth resistor R30, a thirty-first resistor R31, a thirty-second resistor R32, a thirty-third resistor R33, a thirty-fourth resistor R34, a thirty-fifth resistor R35, a thirty-sixth resistor R36, a thirty-seventh resistor R37, a thirty-eighth resistor R38, a thirty-ninth resistor R39, a nineteenth capacitor C19, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a seventh voltage regulator diode D7, and an eighth voltage regulator diode D8. One end of the twenty-seventh resistor R27 is electrically connected to the first output terminal of the first isolation drive chip U6, and the other end of the twenty-seventh resistor R27 is electrically connected to the gate of the third transistor Q3. One end of the twenty-eighth resistor R28 is electrically connected to the second output terminal of the first isolation drive chip U6, and the other end of the twenty-eighth resistor R28 is electrically connected to the gate of the third transistor Q3. One end of the thirtieth resistor R30 is electrically connected to the third output terminal of the first isolation drive chip U6, and the other end of the thirtieth resistor R30 is electrically connected to the gate of the third MOS transistor Q3. One end of the thirty-first resistor R31 is electrically connected to the first output terminal of the second isolation drive chip U8, and the other end of the thirty-first resistor R31 is electrically connected to the gate of the fourth MOS transistor Q4. One end of the thirty-second resistor R32 is electrically connected to the second output terminal of the second isolation drive chip U8, and the other end of the thirty-second resistor R32 is electrically connected to the gate of the fourth MOS transistor Q4. One end of the thirty-third resistor R33 is electrically connected to the third output terminal of the second isolation drive chip U8, and the other end of the thirty-third resistor R33 is electrically connected to the gate of the fourth MOS transistor Q4. One end of the thirty-fourth resistor R34 is electrically connected to the first output terminal of the third isolation drive chip U10, and the other end of the thirty-fourth resistor R34 is electrically connected to the gate of the fifth MOS transistor Q5. One end of the thirty-fifth resistor R35 is electrically connected to the second output terminal of the third isolation drive chip U10, and the other end of the thirty-fifth resistor R35 is electrically connected to the gate of the fifth MOS transistor Q5. One end of the thirty-sixth resistor R36 is electrically connected to the third output terminal of the third isolation drive chip U10, and the other end of the thirty-sixth resistor R36 is electrically connected to the gate of the fifth MOS transistor Q5. One end of the thirty-seventh resistor R37 is electrically connected to the first output terminal of the fourth isolation drive chip U12, and the other end of the thirty-seventh resistor R37 is electrically connected to the gate of the sixth MOS transistor Q6. One end of the thirty-eighth resistor R38 is electrically connected to the second output terminal of the fourth isolation drive chip U12, and the other end of the thirty-eighth resistor R38 is electrically connected to the gate of the sixth MOS transistor Q6. One end of the thirty-ninth resistor R39 is electrically connected to the third output terminal of the fourth isolation drive chip U12, and the other end of the thirty-ninth resistor R39 is electrically connected to the gate of the sixth MOS transistor Q6.

[0083] One end of the nineteenth capacitor C19 is electrically connected to the output terminal of the first isolation drive chip U6, and the other end of the nineteenth capacitor C19 is electrically connected to the negative electrode of the seventh voltage stabilizing diode D7. The positive electrode of the seventh voltage stabilizing diode D7 is electrically connected to the twenty-fifth resistor R25, and the other end of the twenty-fifth resistor R25 is electrically connected to the low-voltage DC input terminal 1. The twentieth capacitor C20 is electrically connected between the output terminal of the second isolation drive chip U8 and the low-voltage DC input terminal 1. One end of the twenty-first capacitor C21 is electrically connected to the output terminal of the third isolation drive chip U10, and the other end of the twenty-first capacitor C21 is electrically connected to the negative electrode of the eighth voltage stabilizing diode D8. The positive electrode of the eighth voltage stabilizing diode D8 is electrically connected to the twenty-sixth resistor R26, and the other end of the twenty-sixth resistor R26 is electrically connected to the low-voltage DC input terminal 1. The twenty-second capacitor C22 is electrically connected between the output terminal of the fourth isolation drive chip U12 and the low-voltage DC input terminal 1. It can reduce the influence of power supply fluctuations on the performance of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12, and improve the stability and reliability of the circuit.

[0084] In an alternative embodiment of the present application, as Figure 4 and Figure 9 shown, the rectifier filter circuit 210 includes a plurality of diodes for rectification and filtering. The plurality of diodes include the ninth diode D9, the twelfth diode D10, the eleventh diode D11, the twelfth diode D12, the thirteenth diode D13, the fourteenth diode D14, the fifteenth diode, the sixteenth diode D16, the seventeenth diode D17, the eighteenth diode D18, the nineteenth diode D19, the twentieth diode D20, the twenty-first diode D21, the twenty-second diode D22, the twenty-third diode D23, the twenty-fourth diode D24, the second inductor L2, and the twenty-seventh capacitor C27. The twelfth diode D10, the twelfth diode D12, the fourteenth diode D14, and the sixteenth diode D16 are connected in series in sequence. The positive electrode of the sixteenth diode D16 is electrically connected to one end of the secondary winding of the isolation transformer 210. The negative electrode of the twelfth diode D10 is electrically connected to one end of the second inductor L2. The ninth diode D9, the eleventh diode D11, the thirteenth diode D13, and the fifteenth diode D15 are connected in series in sequence. The positive electrode of the fifteenth diode D15 is electrically connected to the other end of the secondary winding of the isolation transformer 210. The negative electrode of the ninth diode D9 is electrically connected to one end of the second inductor L2.

[0085] The eighteenth diode D18, the twentieth diode D20, the twenty-second diode D22, and the twenty-fourth diode D24 are connected in series in sequence. The negative electrode of the eighteenth diode D18 is electrically connected to one end of the secondary winding of the isolation transformer 210, and the positive electrode of the twenty-fourth diode D24 is electrically connected to one end of the twenty-seventh capacitor C27. The other end of the twenty-seventh capacitor C27 is electrically connected to the other end of the second inductor L2. The seventeenth diode D17, the nineteenth diode D19, the twenty-first diode D21, and the twenty-third diode D23 are connected in series in sequence. The negative electrode of the seventeenth diode D17 is electrically connected to the other end of the secondary winding of the isolation transformer 210. The positive electrode of the twenty-third diode D23 is electrically connected to one end of the twenty-seventh capacitor C27.

[0086] Through the above solution, the ninth diode D9, the tenth diode D10, the eleventh diode D11, the twelfth diode D12, the thirteenth diode D13, the fourteenth diode D14, the fifteenth diode D15, the sixteenth diode D16, the seventeenth diode D17, the eighteenth diode D18, the nineteenth diode D19, the twentieth diode D20, the twenty-first diode D21, the twenty-second diode D22, the twenty-third diode D23, the twenty-fourth diode D24, the second inductor L2, and the twenty-seventh capacitor C27 can perform rectification and filtering.

[0087] In an alternative embodiment of the present application, such as Figure 4 , Figure 8 and Figure 10As shown, the optoelectronic isolation circuit 13 includes multiple optoelectronic isolation chips, namely the first optoelectronic isolation chip U13, the second optoelectronic isolation chip U14, the third optoelectronic isolation chip U15, the fourth optoelectronic isolation chip U16, the fifth optoelectronic isolation chip U17, and the sixth optoelectronic isolation chip U18. The optoelectronic isolation circuit 13 further includes the forty-second resistor R42, the forty-third resistor R43, the forty-fourth resistor R44, and the forty-fifth resistor R45. The first ends of the first optoelectronic isolation chip U13, the second optoelectronic isolation chip U14, the third optoelectronic isolation chip U15, and the fourth optoelectronic isolation chip U16 are sequentially electrically connected to the first input terminals of the first isolation drive chip U6, the second isolation drive chip U8, the third isolation drive chip U10, and the fourth isolation drive chip U12. The second ends of the first optoelectronic isolation chip U13, the second optoelectronic isolation chip U14, the third optoelectronic isolation chip U15, and the fourth optoelectronic isolation chip U16 are sequentially electrically connected to the power management module 5 through the forty-second resistor R42, the forty-third resistor R43, the forty-fourth resistor R44, and the forty-fifth resistor R45. The first end of the fifth optoelectronic isolation chip U17 is electrically connected to the current-limiting detection circuit 71. The first end of the sixth optoelectronic isolation chip U18 is electrically connected to the over- and under-voltage detection circuit 72. The second ends of the fifth optoelectronic isolation chip U17 and the sixth optoelectronic isolation chip U18 are both electrically connected to the power management module 5. Thus, the optoelectronic isolation circuit 13 can provide a high-voltage isolation transfer channel for pulse or level signals between the isolation drive module 3 and the power management module 5.

[0088] In an alternative embodiment of the present application, in combination with Figure 11 As shown, the power management module 5 includes a power management chip U19. The multiple first input terminals of the power management chip U19 are sequentially electrically connected to the second ends of the first optoelectronic isolation chip U13, the second optoelectronic isolation chip U14, the third optoelectronic isolation chip U15, the fourth optoelectronic isolation chip U16, the fifth optoelectronic isolation chip U17, and the sixth optoelectronic isolation chip U18. The second input terminal of the power management chip U19 is electrically connected to the double-loop given feedback control circuit 9.

[0089] Based on the above embodiments, as Figure 4 and Figure 11As shown, the double-loop given feedback control circuit 9 includes a first control chip U20, a second control chip U21, a third control chip U22, and a fourth control chip U23. The first end of the first control chip U20 is electrically connected to the first sub-control end of the control module 10. The first end of the second control chip U21 is electrically connected to the first end of the first control chip U20. The second end of the second control chip U21 is electrically connected to the second sub-control end of the control module 10. The second end of the first control chip U20 is electrically connected to the high-voltage DC output terminal 6. The first end of the third control chip U22 is electrically connected to the high-voltage DC output terminal 6. The second end of the third control chip U22 is electrically connected to the first end of the second control chip U21. The first end of the fourth control chip U23 is electrically connected to a reference voltage. The second end of the fourth control chip U23 is electrically connected to the second input terminal of the power management chip U19.

[0090] In an alternative embodiment of the present application, as Figure 10 and Figure 12 shown, the over- and under-voltage detection circuit 72 includes a voltage detection chip U24. The input terminal of the voltage detection chip U24 is electrically connected to the low-voltage DC input terminal 1. The output terminal of the over- and under-voltage detection circuit 72 is electrically connected to the opto-isolation circuit 13.

[0091] In an alternative embodiment of the present application, as Figure 10 and Figure 12 shown, the current-limiting detection circuit 71 includes a current-limiting chip U25. The input terminal of the current-limiting chip U25 is electrically connected to the low-voltage DC input terminal 1. The output terminal of the current-limiting chip U25 is electrically connected to the opto-isolation circuit 13.

[0092] This solution provides a high-voltage DC power supply. As Figure 4 shown, through the current-limiting detection circuit 71, over- and under-voltage detection circuit 72, etc. on the primary side, the operating condition information on the primary side is converted from an analog signal to a high and low level signal, and then coupled to the power management module 5 on the secondary side through the opto-isolation circuit 13, providing a reference condition for its good operation. The digital drive signal sent by the power management module 5 is coupled to the isolation drive module 3 on the primary side through the opto-isolation circuit 13, and then the isolation drive module 3 outputs a digital control signal to control the switch module 4, thereby realizing the secondary side isolation control of the switch module 4 and the linkage of the two-side circuits. Under the control of the power management module 5, all the interaction signals in the entire main circuit are not analog signals, but use level signals for interaction. At the same time, this solution uses an isolation transformer 210 for electrical isolation of the main circuit, combined with an innovative full-level interaction control strategy, to achieve energy transmission with high power density and high isolation voltage.

[0093] In addition, this solution can quickly detect the abnormal conditions at the high-voltage DC output terminal 6 through the arc-drawing detection module 8 and feedback them to the control module 10 and the power management module 5, achieving a power-off response speed of nanoseconds and timely cutting off the energy supply of the high-voltage power supply. Compared with the traditional power-frequency transformer isolation, this application also has the advantages of small volume, low cost, fast response, and higher reliability.

[0094] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved, and no limitations are imposed herein.

[0095] The above specific embodiments do not constitute a limitation on the protection scope of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A high voltage DC power supply, characterized in that: include: Low voltage DC input terminal, isolation transformer module, isolation drive module, power management module, switch module and high voltage DC output terminal; The power input end of the switch module is electrically connected to the low voltage DC input end, the power output end of the switch module is electrically connected to the input end of the isolation transformer module; the output end of the isolation transformer module is electrically connected to the high voltage DC output end; The output end of the power management module is electrically connected to the driving control end of the isolation driving module; The power management module is used to provide a digital driving signal to the isolation driving module; The output end of the isolation driving module is electrically connected to the switch control end of the switch module; The isolation driving module is used to output a digital control signal according to the digital driving signal to control the on / off state of the switch module.

2. The high voltage DC power supply according to claim 1, characterized in that: The isolation transformer module includes an isolation transformer and a rectifier and filter circuit; The primary side of the isolation transformer is electrically connected to the power output end of the switch module, and the secondary side of the isolation transformer is electrically connected to the input end of the rectifier and filter circuit; the output end of the rectifier and filter circuit is electrically connected to the high-voltage DC output end.

3. The high voltage DC power supply according to claim 1, characterized in that: Also includes: Input signal detection module; The input end of the input signal detection module is electrically connected to the low voltage DC input end, and the first output end of the input signal detection module is electrically connected to the input end of the isolation driving module; The input signal detection module is used to detect the low-voltage DC signal output by the low-voltage DC input terminal, and output a digital detection signal to the isolation drive module according to the low-voltage DC signal; The isolation driving module is further configured to output the digital control signal according to the digital detection signal.

4. The high voltage DC power supply according to claim 3, characterized in that: The second output terminal of the input signal detection module is electrically connected to the first input terminal of the power management module; The power management module is further configured to generate the digital driving signal provided to the isolation driving module according to the digital detection signal.

5. The high voltage DC power supply according to claim 3, characterized in that: The input signal detection module includes at least one of a current limiting detection circuit and an over-voltage or under-voltage detection circuit.

6. The high voltage DC power supply according to claim 1, characterized in that: Also includes: Arc detection module; The input end of the arc detection module is electrically connected between the output end of the isolation transformer module and the high voltage DC output end, and the output end of the arc detection module is electrically connected to the second input end of the power management module; The arc detection module is used to obtain the high-voltage DC signal at the high-voltage DC output terminal, and output an arc alarm signal based on the high-voltage DC signal and the arc trigger threshold; The power management module is further configured to provide the digital drive signal to the isolation drive module according to the arc alarm signal.

7. The high voltage DC power supply according to claim 6, characterized in that: Also includes: Dual-loop given feedback control circuit and control module; The output end of the dual-loop given feedback control circuit is electrically connected to the first input end of the control module, and the output end of the arc detection module is also electrically connected to the second input end of the control module; The first control end of the control module is electrically connected to the control end of the arc detection module, and the second control end of the control module is electrically connected to the control end of the dual-loop given feedback control circuit; The input end of the dual-loop given feedback control circuit is electrically connected between the arc detection module and the high-voltage DC output end, and the control module is used to control the dual-loop given feedback control circuit to collect the high-voltage DC signal at the high-voltage DC output end; The control module is further used to adjust the arc trigger sensitivity and arc trigger threshold of the arc detection module according to the high voltage DC signal and the arc alarm signal.

8. The high voltage DC power supply according to claim 6, characterized in that: Also includes: Optoelectronic isolation circuit; The photoelectric isolation circuit is electrically connected between the power management module and the isolation driving module.

9. The high voltage DC power supply according to claim 6, characterized in that: The arc detection module includes a pulse current detection circuit, a limit sampling circuit, a peak detection circuit and an integral trigger circuit; The pulse current detection circuit is used to obtain the current signal output by the output end of the isolation transformer module; The input end of the amplitude limiting sampling circuit is electrically connected to the output end of the pulse current detection circuit, and the amplitude limiting sampling circuit is used to convert the current signal into a voltage signal; The input end of the peak detection circuit is electrically connected to the output end of the amplitude limiting sampling circuit, and the peak detection circuit is used to detect a voltage signal with an amplitude greater than a preset amplitude to obtain a detection signal; The input end of the integration trigger circuit is electrically connected to the output end of the peak detection circuit, and the output end of the integration trigger circuit is electrically connected to the input end of the power management module. The integration trigger circuit is used to integrate the detection signal and output the arc alarm signal when the integration result is greater than a preset integration threshold.

10. The high voltage DC power supply according to claim 9, characterized in that: The amplitude limiting sampling circuit comprises a first resistor, a second resistor, a third resistor and a first capacitor, one end of the first resistor is electrically connected to the first output end of the pulse current detection circuit and is electrically connected to the ground, and the other end of the first resistor is electrically connected to the second output end of the pulse current detection circuit; A first end of the second resistor is electrically connected to the ground, the other end of the second resistor is electrically connected to one end of the first capacitor, and the other end of the first capacitor is electrically connected to the second output end of the pulse current detection circuit; One end of the third resistor is electrically connected to one end of the first capacitor, and the other end of the third resistor is electrically connected to an input end of the peak detection circuit.

11. The high voltage DC power supply according to claim 9, characterized in that: The peak detection circuit comprises a peak detection chip, the input end of the peak detection chip is electrically connected to the output end of the amplitude limiting sampling circuit, and the output end of the peak detection chip is electrically connected to the input end of the integration trigger circuit.

12. The high voltage DC power supply according to claim 9, characterized in that: The integration trigger circuit includes an integrator circuit and a trigger chip; The input end of the integrator circuit is electrically connected to the output end of the peak detection circuit, the output end of the integrator circuit is electrically connected to the input end of the trigger chip, and the output end of the trigger chip is electrically connected to the input end of the power management module.

13. The high voltage DC power supply according to claim 7, characterized in that: Also includes: An optical fiber isolation communication module, the communication end of the control module is electrically connected to the optical fiber isolation communication module, and the control module is used to perform optical fiber isolation communication with an external device through the optical fiber isolation communication module.

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